Sample Pest-Risk Map (IMAGE) North Carolina State University Caption This map charts results of a stochastic simulation model for Sirex noctilio, a Eurasian woodwasp, in eastern North America. Credit Frank Koch Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.